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Nexperia USA Inc. PZU16B3A,115
- Part No.:
- PZU16B3A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU16B3A,115.pdf
- Description:
- DIODE ZENER 16V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,309
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Product details
Overview
PZU16B3A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 16 V nominal Zener voltage at 5 mA, with 80 Ω maximum differential resistance, 20 nA reverse current at 0.5 mA, and 1.5 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection clamping.
For engineers reviewing the PZU16B3A,115 datasheet, PZU16B3A,115 pinout, PZU16B3A,115 application, or PZU16B3A,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), low dynamic impedance at regulation current, thermal resistance to solder point (55 K/W), and non-repetitive surge capability (12 A peak reverse current).
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain precise DC voltage across its terminals under varying load or input conditions. Its hard breakdown knee and intentional minor leakage rise optimize fast switching response and reduce noise in feedback paths.
Designed for surface-mounted use on FR4 PCBs with standard tin-plated copper, it supports both reflow and wave soldering per IEC 60134 absolute maximum ratings. Junction-to-solder-point thermal resistance of 55 K/W enables reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal at IZ = 5 mA; tight ±2 % tolerance ensures accurate voltage reference in precision regulation. |
| Differential Resistance (rdif) | ≤80 Ω at IZ = 5 mA; low impedance maintains stable output under small load variations. |
| Reverse Current (IR) | ≤20 nA at VR = 11.2 V (0.7 × VZ); ultra-low leakage minimizes standby power loss. |
| Temperature Coefficient (SZ) | +1.5 mV/K at IZ = 5 mA; positive drift compensates for other circuit components' negative drift. |
| Non-repetitive Peak Reverse Current (IZSM) | 12 A at tp = 100 µs; handles transient surges without degradation in protection circuits. |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on FR4 PCB; defines continuous DC power handling in compact layouts. |
| Junction Temperature (Tj) | 150 °C maximum; sets upper thermal limit for reliability in enclosed or high-ambient environments. |
Pinout & Package
The PZU16B3A,115 is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.7 mm × 1.25 mm × 0.95 mm, with 1.3 mm lead pitch and cathode-marked body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation. |
| 2 | Anode | Connected to ground or lower-potential rail; forms the reference return path for Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B3 series) | Enables tighter regulation than ±5 % variants, reducing need for post-production trimming in voltage references. |
| Hard breakdown knee | Provides sharp, predictable turn-on behavior critical for accurate clamping in overvoltage protection circuits. |
| Optimized leakage for noise reduction | Intentional minor IR rise improves high-frequency stability in feedback networks of switching regulators. |
| Low thermal resistance to solder point (55 K/W) | Allows efficient heat transfer from junction to PCB copper, supporting higher pulse power in space-constrained designs. |
| SOD323 footprint compatibility | Matches industry-standard 1.3 mm pitch layout, enabling drop-in replacement in existing high-density PCB designs. |
Applications
| Power Supply Feedback Loop | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Provides stable 16 V reference to TL431 or similar shunt regulator IC, setting primary-side feedback threshold. Use Value: ±2 % tolerance ensures output accuracy within ±1.5 % over line/load/temperature, meeting industrial power supply specs. |
Use Scenario: Clamping transient spikes on 12 V automotive or industrial control bus lines. IC Role / Device Role / Timing Role: Acts as passive crowbar element, conducting when bus exceeds 16.5 V to divert surge energy to ground. Use Value: 12 A non-repetitive peak current rating absorbs 100 µs transients per ISO 7637-2 Pulse 1/2a without failure. |
| Low-Power Analog Reference | Signal Level Shifting |
|
Use Scenario: Generating bias voltage for op-amp input stages or ADC reference buffers in battery-powered sensors. IC Role / Device Role / Timing Role: Supplies clean, temperature-compensated 16 V reference to rail-splitter or virtual-ground circuitry. Use Value: +1.5 mV/K coefficient offsets typical op-amp input offset drift, improving DC accuracy over –40 °C to +85 °C. |
Use Scenario: Translating logic-level signals between 3.3 V microcontrollers and 16 V actuator interfaces. IC Role / Device Role / Timing Role: Functions as bidirectional level translator via Zener-clamped diode-resistor network. Use Value: 80 Ω dynamic impedance ensures minimal signal distortion during 100 kHz digital edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16,215 | ±5 % tolerance, 16 V nominal, SOT23 package, 100 Ω rdif, 100 nA IR | Higher leakage and looser tolerance reduce accuracy in precision references but suit cost-sensitive general-purpose clamping. | Select when board space allows larger SOT23 and ±5 % regulation error is acceptable. |
| MMSZ4687T1G | ±5 % tolerance, 16 V nominal, SOD123 package, 100 Ω rdif, 100 nA IR, 500 mW Ptot | Larger package and higher power rating support higher continuous dissipation but increase PCB area by 2.5×. | Choose for higher ambient temperatures (>70 °C) where 320 mW derating limits PZU16B3A,115 performance. |
Compared with BZX84-C16,215 and MMSZ4687T1G, PZU16B3A,115 offers superior voltage accuracy and lower dynamic impedance in the smallest footprint-critical for miniaturized power management and noise-sensitive analog systems.
Availability
PZU16B3A,115 is available at Aetrix Electronics and suitable for power supply feedback loops, overvoltage protection clamps, and low-power analog references requiring stable component supply across industrial, automotive, and consumer electronics production cycles.
Supply support for PZU16B3A,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with scalable manufacturing and AEC-Q200 qualified products.
The PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for surface-mounted voltage reference and clamping applications demanding tight tolerance, low noise, and robust surge immunity in space-constrained designs.
FAQ
What is the maximum continuous reverse power dissipation for PZU16B3A,115 at 70 °C ambient?
At 70 °C ambient, PZU16B3A,115 derates linearly from 320 mW at 25 °C using its specified thermal resistance. With Rth(j-a) = 255 K/W on FR4, maximum continuous dissipation drops to approximately 170 mW to maintain Tj ≤ 150 °C. This value assumes standard single-sided copper PCB mounting per datasheet condition [3].
How does the B3 tolerance series differ electrically from B1 or B2 in the PZUxBA family?
B3 denotes the tightest ±2 % tolerance grade in the PZUxBA series, achieved through enhanced binning and process control. While B1 and B2 also specify ±2 %, B3 parts undergo additional screening to ensure tighter distribution around nominal VZ, resulting in lower unit-to-unit variation in regulation voltage at 5 mA-critical for matched reference pairs or multi-rail systems.
Can PZU16B3A,115 be used in place of a 15 V Zener diode in an existing design?
No-PZU16B3A,115 is strictly a 16 V device with ±2 % tolerance (15.68 V to 16.32 V range). Substituting it for a 15 V Zener would raise regulation voltage by ~6.7 %, potentially exceeding downstream IC absolute maximum ratings or violating system voltage margins. Use PZU15B3A,115 instead for 15 V applications.
What is the significance of the "intentional minor rise of leakage current" noted in the datasheet?
This controlled increase in reverse current (vs. earlier PZU5.1BA–10BA variants) reduces minority-carrier lifetime effects, yielding faster recovery from breakdown and lower high-frequency noise-particularly beneficial in switching regulator feedback paths where Zener noise couples into control loops and degrades PSRR.
PZU16B3A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU16B3A,115 FAQ
1.How can I place an order for PZU16B3A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU16B3A,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PZU16B3A,115 reliable?
The price and inventory of PZU16B3A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU16B3A,115 is usually 5 days.
3.What payment methods are accepted for PZU16B3A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU16B3A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU16B3A,115?
PZU16B3A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU16B3A,115 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PZU16B3A,115?
For technical support, including PZU16B3A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU16B3A,115 requirements.
6.How does Aetrix verify that PZU16B3A,115 is sourced from the original manufacturer or authorized distributors?
All PZU16B3A,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PZU16B3A,115 meets industry standards.
7.What is the process for return or replacement of PZU16B3A,115?
All PZU16B3A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU16B3A,115, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PZU16B3A,115 part is unused and in its original packaging.
Return procedure for PZU16B3A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU16B3A,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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